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Could too much Synthroid (thyroxine) cause heart block?

1 doctor weighed in
Dr. Calvin Weisberger
Internal Medicine - Cardiology

In brief: Thyroid

Too much synth rood would usually cause too rapid a heart rate.
In an occasional patient the tachycardia could have some av block associated. Too little thyroid would be a more common cause of block.

In brief: Thyroid

Too much synth rood would usually cause too rapid a heart rate.
In an occasional patient the tachycardia could have some av block associated. Too little thyroid would be a more common cause of block.
Dr. Calvin Weisberger
Dr. Calvin Weisberger
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